Apparatus for stripping carding-machines by a vacuum.



P. KESTNEH.

APPARATUS FOR STRIFPSNG GARDING MACHINES BY A VACUUM.

APPLICATION FILED NOV-10,1913

Patented Feb. 11, 1919.

4 SHEETSSHEET I.

INVENTOFL Z /7 M M WlTNEbShS s i Z. jyh d/vnwms NONRIS puns cu. wow-LuWA'm/ruHN 4 SHEETS-SHEET 2 Patented Feb. 11, 1919.

H n a h Q a APPLlCATlOW FILED ?\0V.'l0.1913- APPARATUS FC-R STRIPPHJGCARDiNG MACHWES BY A VACUUM.

P. KESTNER V v APPARATUS FOR STRWPHNS CARDZNG MACHiNES BY A VACUUM.

APPLSCATIUN FiLED HOV. i0, i913.

1,293,791, fiiai ente Feia. 11, 1919.

SHEETS--SHEET 3- WITNESSES P. KESTNER.

APPARATUS FOR STREPPING CARDING MACHINES BY A VACUUM.

APPLICATION FILED NOV. KO, I913.

Patented Feb. 11, 191i 4 SHEEYSSHEET 4 PAUL KESTNEB 0F LILLE, FRANCE.

APPARATUS FOR STBIPPING- GAMING-MACHINES BY A VACUUM- Specification ofLetters Patent.

Patented Feb. 11, 1919.

Application filed November 10, 1913. Serial No. 800,134.

To all whom it may concern:

Be it known that 1, PAUL KEs'rNER, citizen of the French Republic,residing at Lille, Department of the Nord, in France, have inventedcertain new and useful Improvements in Apparatus for Stripping Carding-Machines by a Vacuum; and I do hereby declare the following to be afull,-clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention has for its object to provide an apparatus for strippingcarding machines by means of a vacuum and for effecting the successivestripping of the drum and the dofi'er at a single point of the machinesituated between the drum and the dofi'er by means of a two-part suctiondevice mounted upon a carrier to which is imparted a reciprocatorymovement.

In the embodiment of the invention a twopart suction device isillustrated, which comprises a distributer having a piston which isautomatically actuated to permit either the interruption of the suctionor the connecting of one or the other of the suction devices with thevacuum apparatus. The embodiment also includes means for mounting thesame upon the usual brackets, which serve either for stripping or facingthe carding machine. Furthermore, the apparatus is provided withconvenient safety and pro tective arrangements and the suction device ofthe drum is provided with ball supports and with small back pressureorifices designed to prevent any bad cotton from being 19 is controlledby a cut-off valve which indrawn from the small drum.

In the drawings:

Figure 1 is a front view of the apparatus partly broken away;

Fig. 2 is a plan view thereof;

Fig. 3 is a transverse sectional view;

Fig. 1 is a fragmental view of the safety arrangement; v

Fig. 5 is a side elevation of the suction device for the large drum;

Fig. 6 is a plan view of the same;

Figs. 7 and 8 are details of a modification of the suction device; and

Fig. 9 is an enlarged vertical sectional view showing the clutch membersout of engagement with each other. v

Extending from the carding machine is a pair of brackets 1 which supportspaced cheeks 2. These cheeks are provided with projections 3, whichrest upon the brackets 1 and are attached thereto by set screws 4. Apair of relatively larger cheeks 5 are secured to the cheeks 2 and areprovided with bearing portions 6. Mounted rotatablv. in these bearings 6and extending between the cheeks 5, is a shaft 7 having oppositelyarranged helical grooves 8 therein. An elongated sleeve 9 surrounds theshaft 7 and is secured 'to a bushing 10 by suitable fasteners 11, thebushing extending into the sleeve and projecting beyond one end thereof.This bushing and sleeve are arranged so that the shaft 7 may rotatewithin the same and the sleeve is provided with a longitudinal slot 12for a purpose which will later appear.

Slidably mounted on the sleeve 8 is a carriage 13, which carriage isgiven longitudinal movement on the sleeve by the rotation of the shaft7. The carriage is provided with a socket member 14: in which is secureda finger 15. This finger extends inwardly through the slot 12 in'thesleeve 8 and into the helical grooves in the shaft 7. It will thus beseen that as the shaft 7 is rotated, the carriage will be moved from oneend to the other and inasmuch as the helical groove extends in bothdirections, when the carriage reaches the other end of its travel, itsdirection of travel will be reversed and it will again travel the lengthof the shaft. This carriage 13 supports a casting 16 which is providedwith two nozzles 17 and 18. These nozzles communicate with a commonorifice 19 which may be connected toa suitable vacuum pump.Communication between the nozzles17 and 18 and the orifice cludes acylinder 20 in which a piston 21 operates, the piston having extensions22 and 23 projecting from the ends of the cylinder 20. A pair of ports24 and 25 in the piston are adapted to be moved into communioation withthe passageway 26, which extends from the nozzle 18, or the passageway27, which extends from the nozzle 17, so as to establish communicationbetween either of these nozzles and the orifice 19, or on the otherhand, the piston is adapted to be moved so that neither of these portsregister with the respective passageways and orifice. Thus either nozzlemay be set in operation for stripping the desired drum.

In order to avoid the blocking up of the groove in the sleeve 8, whichincloses the shaft 7, by the ingress of particles of dust from thecotton waste, a plate 28 is hinged travel.

at 29. One end of this plate is provided with a cam surface 30 againstwhich the edge of the carriage 13 rides when "the carriage is movingfrom left to right. This movement of the carriage and the cooperation.with the cam causes the plate to be raised about its hinge so as topermit the travel of the finger 15 through *the slot12 in the sleeve 8.

Drum shields 31 and 32 areprovided with. elongated openings throughwhich the nozzles 17 and 18 "extend and in which they These openings arenormally closed by plates 33, which are hinged at 34 and are held intheir closed position by springs 35, being supported by :clamps :36,which bear against the "edges of the openings. 'Each end of each ofthese plates 3- is provided with :a cam 37, against which the nozzleshear in their reciprocatory movement. The hearing of these nozzlesagainst these came '37 opens the plates against the :action of thesprings 35, but as the nozzles pass the ens of the cams and the plates,the springs will cause the plates to close.

When the nozzlesidraw up by suctionthe ootton'which remains in the largedrum, some of the 'bad cotton, although no longer remaining in the coverof the 'lar'gedrum, is not completely drawn off by the nozzle. "Thesmall drumcarries this cotton away, :keeping it at thesurface :of itscovering and returns it at the same time as the flee'ce which "isdetached by 'the' trem'bler of the :carding machine. The fabric offleece it'hu's contains this cotton which is of-inferior quality.

In order to obviate this disad vanta'ge the nozzle 17'is provided with aball support 38 in which a ball39 is disposed. This ball rolls close to*the'suctionorifice of the nozzle and *prevents the bad cotton frombeing detach'ed. In themodified form iof the device illustrated in Fig.7, the ball 39 is omitted and iin'lieu thereof tubes 40 and 41 are:connected, for instance to the compression side of lthe vacuum pump andterminate adjacent to the end of the nozzle 17. one lb'eing disposedabove the nozzle and one below.

llhe pressure :of the weight npon the card is suflicient to displace inthe covering the had cotton which has been detached by the reitt'ect ofthe suction of :thernozzle.

Fig. 8 shows another nnodified form of this -portion of the device,which consists simply of raisin-all tube 441, fixed on the side of thenozzle, as illustrated (in the Ffigure. The cheeks 5 vcarrry abntments42 and '43, 'whiehmrewarranged rto engage the wexten- :sions 22 and 123,which proj eat from the pieten 21, so that when the carriage 13 movesfrom-end 'to-rend of "the shaft 7, "the piston \wil'l beoperated tocause the suction to be produced :in 'GllllIBP'iOHG nozzle or the other.

Secured to one end "of the shaft 7 is a chamber 45, and a drivingsprocket 46, by means of which motion is imparted to the shaft 7,"isloosely mounted on the shaft and is provided with .a clutchmember 47.Thls clutch member is normally pressed away from the hand wheel 44 by aspring 48 which is located with the chamber 45. A second clutch member49 is secured to the shaft 7 and is adapted to cooperate with the clutchmember 47 in the -.driving .of the shaft. A. support ring 50 encirclesthe clutch memzbGI'S 47 and 49 and is adapted when :moved Assuming thatthe clutch members 47 and.

49 are held disengaged from each other by the ta-pgpets v51, so that themachine is :at a standstill, and assuming that the drive sprocket 46 isin motion, it is only necessary to start the operation of the machine toturn the hand wheel 44. The turning of this hand wheel will cause themovement of the carriage 13 because of the engagement of the finger 15in the helical groove in the shaft '7, .so that the pressure of the'tappets 51 against the rrin 50 and consequently against the-clutch willbe relieved. The spring 48 will then operate 'to move the clutchmember47 into engagement with the clutch member 49. This engagement will causethe rotation 0f the shaft 7 and consequently will cause the travelof thecarriage 13 with the nozzle 17 which has been opened by the movement ofthe piston 21 from left to right. When the edge of the carriage 13engages the cam surface 30 of the protector .28, the rotector 28 will belifted and the carriage will continue its stroke. J ust'prior to thetime when the carriage 13 reaches the end of its stroke the projection23 will engage the abutment 43, so that the ,port' 25-will be shiftedinto alinement with the-passageway 26 of the nozzle 18, thusestablishing communication between this passageway and the port .19 anddestroying communication between the passageway .27 of the :IIOZZlG l7and this port 1:9. The finger 15 will, at the end-pf this stroke, followthe reverse groove in the helical-1y grooved shaft 7, :and cause thetravel sofx'the ca rniage 13in the op-posite direction. Just prior tothe :end of the stroke of. this carriage in this (direction, theprojection *22 engages the abutment 42 and it-he piston will rthllS bemoved so as to :de-

fifik'hand wheel 44 which .is (provided with a .rstaoyrthe pontbet-weenieitherof thevp g ways 26 or 27. When the carriage reaches thisend of its stroke it will engage the collar 52 and through the tappets51 and the ring will exert ressure on the clutch member 47 so as todlsengage the same from the clutch member 49 against the action of thespring 48. The machine will thus be stopped automatically. Referringparticularly to the plates 33 which close the openings through which theends of the nozzles 17 and 18 extend, it is pointed out that theseplates will be openedas the nozzles ride over the cams 37 and will beclosed when they pass beyond the plates by the springs 85.

What I claim is:

1. In a vacuum stripping apparatus for carding machines, the combinationwith the drum and dofi'er, of a suction nozzle cooperating with the drumand a second suction nozzle cooperating with the dolfer, a common sourceof vacuum for said nozzles, a carriage movable longitudinally of thedrum and carrying both of said nozzles, and means to successively placesaid nozzles in communication with the source of vacuum.

2. In a vacuum stripping apparatus for carding machines, the combinationwith the drum and dolfer, of a suction nozzle cooperating with the drumand a second suction nozzle cooperating with the dofler, a common sourceof vacuum with which one of the nozzles is normally in communication, acar riage movable longitudinally of the drum and carrying both of saidnozzles, and means automatically operable during the movement of thecarriage to cut oil communication between the source of vacuum and thenozzle communicating therewith and to establish communication betweenthe source of vacuum and the other nozzle.

3. In a pneumatic stripping apparatus for carding machines, thecombination with the drum and doflt'er and the cover-plates therefor, ofa carriage movable longitudinally of the drum having suction nozzles tocooperate with the drum and dofier, the coverplates having openingsthrough which said nozzles project, and closures for said openingsautomatically opened and closed by the movement of the nozzles.

4. In a pneumatic stripping apparatus for carding machines, thecombination with one of the carding elements and its cover plate, of acarriage movable longitudinally of said element and having a suctionnozzle, the cover plate having an opening through which said nozzleprojects, and a closure for said opening automatically opened and closedby the movement of the nozzle.

5. Stripping mechanism for carding machines, comprising a support, acarriage movable longitudinally of the support and having strippingmeans associated therewith, a hinged. cover plate to protect saidsupport, and means whereby the movement of the carriage automaticallyswings said cover plate around its hinged'connection to permit movementof said carriage.

6. The combination with a carding machine, of stripping mechanismcomprising a carriage mounted for movements transversely of the machine,means to move said carriage transversely of the machine, and means toautomatically arrest the motion of the carriage after it has movedtransversely of the machine in both directions.

7. In a pneumatic stripping mechanism for carding machines, thecombination with a carding drum and doifer, of a suction nozzle foreffecting the stripping of the drum, and means associated with saidnozzle for preventing the bad cotton detached by the suction and notcarried away by the nozzle from being discharged by the dofi'er.

In testimony whereof I aflix my signature, in presence of two witnesses.

PAUL KESTNER.

Witnesses:

F. I'IIIM, ALFRED C. HARRISON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

